Simple Cod Curry

Name: Simple Cod Curry
Prep time: 5 min
Cook time: 20 min
Total time: 25 min
Cuisine: Indian
Ingredients: 360 g frozen cod ((£4.40)); 1 onion, finely diced ((£0.15)); ⅕ tbsp fresh ginger, peeled and finely grated ((£0.60)); 2 chillies ((£0.55)); 4 cloves of garlic, minced ((£0.39)); 250 g cherry tomatoes ((£0.69)); 400 ml coconut milk ((£0.80)); 280 g rice, cooked according to packet instructions ((£0.52/4)=(£0.13)); 100 g spinach ((£1.00/2)=(£0.50)); 2 stalks lemongrass, ends cut off and centre piece bashed so the stalk has split slightly ((£0.70)); Fresh coriander ((£0.60)); 1 tbsp olive oil; 300 ml fish stock; 1 heaped tsp turmeric; 1 tbsp curry powder